Olaf, though sainted and regal in Norway, is slightly oafish here. It is one of those names that has become completely familiar in the U.S. without ever becoming assimilated. Now that he's a comical character in Disney's Frozen, he might get some more attention.

The Icelandic form of Olaf — significantly less snowman-like while still maintaining the wintery feel.

Simple, friendly, distinctive name heard in several cultures. The a ending may feel more feminine in the US than Ole, though both variations are acceptable in Scandinavia.

Lavi is a rare member of the trendy leonine group of names in the US, but in Israel it's among the Top 10 boy names. It makes a good alternative to Levi.

Olaf is now heavily tied to the snowman from Frozen, but common nickname Olle has no such associations.